They are_______hard to higher marks in the final exams.(work)为什么填working?
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Theyare_______hardtohighermarksinthefinalexams.(work)为什么填working?Theyare_______hardtohighermarksinth
They are_______hard to higher marks in the final exams.(work)为什么填working?
They are_______hard to higher marks in the final exams.(work)
为什么填working?
They are_______hard to higher marks in the final exams.(work)为什么填working?
working
因为有are,be动词后面要加ing
working
working
因为are后面用现在进行时
working